  <footer class="footer" style="    position: absolute;bottom: 0;
    width: 100%;
    height: 60px;
    line-height: 60px;
    background-color: #f5f5f5;">
      <div class="container">
        <span class="text-muted">Written by Andy in a beautiful summer in 2018.</span>
      </div>
  </footer>
